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Finding the Fourth Proportional to 10,875.99, 15,011.03 and 7,099.77

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Solution

The fourth proportional to 10,875.99, 15,011.03 and 7,099.77 is: 9,799.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,875.99 : 15,011.03 = 7,099.77 : x
  2. Step 2: Convert to fraction form
    10,875.99/15,011.03 = 7,099.77/x
  3. Step 3: Cross multiply
    10,875.99x = 15,011.03 × 7,099.77
  4. Step 4: Simplify right side
    10,875.99x = 106,574,824.96
  5. Step 5: Solve for x
    x = 106,574,824.96/10,875.99
  6. Step 6: Final answer
    x = 9,799.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.